8. Light processor assembly
8.15 Adjusting the notch filter
Purpose of the notch filter
The notch filter is a coated glass plate located at the end of the light pipe assembly. The notch filter applies some small c olor
corrections of the light coming out of the light pipe, which is emitted by the xenon lamp of the projector. T his is done to achieve an
optimal color calibration of the native colors. The notch filter c an slightly turn, with respect to the light path, which allows a small
adjustment of the native colors. Note that, next to the pure optical color calibration by the notch filter, there is als o a software color
calibration.
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Image 8-24
Color gamut.
Target range for x, y Chroma values
• Uncorrected GREEN: (changes together with red)
- x : 0.245 – 0.285
- y : 0.67 – 0.71
• Uncorrected RED: (changes together with green)
- x : 0.67 – 0.69
- y : 0.31 – 0.33
• Uncorrected BLUE: (no impact)
- x : 0.12 – 0.16
-y:0.02–0.8
To access the notch filter, the left side cover has to b e removed from the projector. This proced ure assum es
that t he left side cover is already removed f rom the projector.
Necessary tools
No tools.
How to adjus t the notch filter
1. Release the Thumb screw (reference 1) of the notch filter.
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R5905043 DP2K-12C/11CX 19/02/2018
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